package filter;

import java.io.IOException;


import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;




/**
 * Servlet Filter implementation class LoginFilter
 */
@WebFilter({ "*.faces" })
public class LoginFilter implements Filter {

    /**
     * Default constructor. 
     */
    public LoginFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */

	
	public void doFilter1(ServletRequest request, ServletResponse response,
            FilterChain chain)
            throws IOException, ServletException {

        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse res = (HttpServletResponse) response;
        String url = req.getRequestURL().toString();
        Object logged = req.getSession().getAttribute("userlogged");   
        if (logged == null ){
            if (!url.contains("index") && precisaAutenticar(url)) {            
                res.sendRedirect("index.faces");
            } 
        }
        
        try {
            chain.doFilter(request, response);
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
	
	public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain)
            throws IOException, ServletException {

        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse res = (HttpServletResponse) response;
        String url = req.getRequestURL().toString();
        
        HttpSession session = req.getSession(false);
        if (session != null) {        
        	String logged = (String) req.getSession().getAttribute("userlogged");          
        	if (logged == null && precisaAutenticar(url)){        		
        		res.sendRedirect("index.faces");
        	} 
        		
        }
        
        try {
            chain.doFilter(request, response);
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
	
	
	
    public boolean precisaAutenticar(String url){
        return !url.contains("index")&& !url.endsWith(".css") && !url.endsWith(".js") && !url.endsWith(".jpg")  
            && !url.endsWith(".gif") && !url.contains("javax.faces.resource");
    }

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
